Here is the full list of all 31 Everybody Dance 3 trophies - there are 16 bronze, 9 silver, 5 gold and 1 platinum.
Unlock all other trophies
Play your first solo dance
Play your first dance battle
Play your first dance partners routine
Play 50 dances
Get a 5 star rating on 5 beginner, normal length routines
Get a 5 star rating on 5 intermediate, normal length routines
Get a 0 star rating on a beginner, normal length song
Get a 5 star rating on 5 dance partners, normal length routines (excludes Creator Routines)
Achieve a 70 move streak in any routine (excludes Creator Routines)
Get a 5 star rating on 5 professional, normal length routines
Get at least a 'cool singing' rating in 5 performances
Perform a dance partners routine on St. Valentine's Day
Accumulate 1,000,000 points
Play a song late at night
Reach the Cal target in every song of a single workout
Burn a total of 1000 Cals in Dance Workout
Save 10 video highlights
Create a dance partners routine
Upload a video or snapshot highlight to the community gallery
Heart 20 different videos or snapshots in the community gallery
Play a 5 round party
Play 20 party rounds in total
Complete a section of any routine in dance class mode
5 star 20 sections in dance class
5 star 50 sections in dance class mode
Get 40 hi-scores
Dance for 10 hours in total
Create a solo dance routine
Perform a dance workout
Get a 5 star rating on any professional, normal length song